Extra Thick Letters And Notched Letters Are Double Dies?

PMD, Post Mower Damage at Citizens Bank Park. There was a witness so we KNOW what happened to this one.

Bobby, the witness was drunk so it does not count

I'm thinking 90 some percent of attributions is based in science. Knowing the minting processes is knowing the clues on the coins. The experts agree 90 some percent of the time. Numismatics would be in serious trouble without them. They do disagree occasionally, but that is true in all professions. When they do, I think it's prudent to find out why. That way, us laypersons can use our own brains for a change.

Yes, they have been around a long time and are very different from each other. The Trail doesn't duplicate the design, it extends it. Trails are, and always have been made from horizontal movement of the die against the hub. The cause of the movement is where there is room for debate. With the advent of the single squeeze process, there are more and stronger TD's being manufactured, and while more DD's are being made, there are fewer strong DD's. The future is in TD's unless (as Mike Diamond has mentioned), the Mint decides to return to the old process. In that event, the price of the already manufactured TD's will skyrocket. Either way, the future looks good for Trail Dies. I read your book, BJ. I think 90 some percent of what's in it, is agreed upon by the experts.

Here's one with Wavy Steps, Kevin. Trails in the steps.

Sorry if the picture isn't that great it is the best I can do,earlier on this post a comment was made that copper coating doesn't get peeled off,well I know from reading info on double dies that there is a md that is caused by the coin sticking to the die,from time to time I have came across coins like this one that the coating looks like it was peeled off,pulled off what ever someone would like to call it and on the letters or numbers you will see the design not as rounded as when the copper is covering it,so my thought and it is a thought is when the design is being etched out on the die if it might move a hair or when the making the working die it might move a hair so that after the die presses into the planchet that it leaves a little notch but doesn't show a double line going up the letter or if it makes some letters wider.

The coin in the picture doesn't show any doubling I was using it as an example to how when the copper to me looked like it had been peeled,pulled,and yes splitting how ever it came off,shows more straight,flat,not as rounded images,and just thinking that if that part of the design may resemble more of the features of the die before it is pressed into the coin,i have seen pictures of coin dies from side views so I have to speculate how they look when the design is etched on to them from my past experience in molding or pressing things together leaves a similar but different than the raw design impression,so could it be when we see a little notch at the bottom of a coin or extra thick letters with no out line of a double image is it because that the doubling is so close to the raw design that after pressed it doesn't show the full doubling,that the finished coin that shows the design more rounded covers it up.it is just a theory and I have put it into words the best way I can to try to explain what causes an extra thick letter or a little notch on the bottom,please don't misunderstand I am not saying they are not double dies,i am only speculating as why we may not see a full double image and am looking for any one else that may have a theory or has seen the face of a die and put a coin up to it to see the difference from the raw die to the finished coin.